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Alja [10]
3 years ago
7

5x^{2} -60 = 20 Solve by using the quadratic formula PLZ help

Mathematics
1 answer:
almond37 [142]3 years ago
3 0

Answer: x=4,-4 Solve the equation for x by finding a, b, and c of the quadratic then applying the quadratic formula

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Lines a and b are parallel<br> What is the value of x<br> 5<br> 10<br> 35<br> 55
arsen [322]

Answer:

5

Step-by-step explanation:

3 0
3 years ago
If a cup of coffee has temperature 95∘C in a room where the temperature is 20∘C, then, according to Newton's Law of Cooling, the
muminat

Answer:

61°C

Step-by-step explanation:

Newton's Law  of cooling gives the temperature -time relationship has:

T (t)  = 20 + 75 е⁻(t/50)-------------------------------------------------------- (1)

where Time  is in  minutes (min) & Temperature in degree Celsius (°C)

During the first half hour, t = 30 mins

Substituting into (1)

T = 20 + 75  е⁻(30/50)

  = 20 + 75(0.5488)

  =  20 + 41.16

  =  61.16°C

  ≈    61°C

4 0
3 years ago
What's the equation below thanks
wlad13 [49]
I'm not sure how to display a graph on here, so I'm afraid I can't help you with that part.

However, the answer is C. (-2,3).

To create the graph, either put it into a graphing calculator or manually graph the equations by plugging in different numbers to the equation.
3 0
3 years ago
This table shows the starting and ending temperature for eight days.
antiseptic1488 [7]
For this case, what you should do is use any computational tool and graph the data in the table. For example, I used excel.
 In the x axis we have Starting temperature and in the axis of the y we have Ending temperature.
 You can see how the diagram varies almost linearly.

6 0
4 years ago
Read 2 more answers
3/4w=9 what does w equal?
Studentka2010 [4]
3/4 w = 9

multiply by 4/3 on both sides

4/3 x 3/4 w = 9 x 4/3

w = 9 x 4/3

Simplify that

w = 3 x 4

w = 12

So your final answer is

\boxed{\bf{w=12}}
5 0
3 years ago
Read 2 more answers
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